CAIE IGCSE Biology 7.1.2 Nutrient Sources & Functions

Practise matching nutrients to principal food sources, body functions and evidence from dietary tables and calculations.

Exam points

match carbohydrate, fat and protein sources to energy supply, insulation, growth and tissue repair
link vitamin C, vitamin D, calcium and iron to their body roles and characteristic deficiencies
use supplement or food-table values to calculate intake and justify a dietary recommendation with data

[Maximum number: 4]

Carbohydrates are an important component of a balanced diet.
The flow chart in Fig. 3.1 shows some of the processes that happen to carbohydrates in food that is eaten.

Fig. 3.1

Mineral salts are another important component of a balanced diet.

State the importance of calcium ions and iron ions in a balanced diet.
calcium ions
iron ions

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7.1.2—Principal dietary sources and describe question 1